Leather-skiving machine.



Patented may 22, |900.

C. H. BAYLEY.

i LEATHER SKIVING MACHINE. v

(Application led Dec. 5, 1899.) (No Model.)

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Tia/enton- UNITED STATES PATENT OFFICE.

CHARLES H. BAYLEY, 0F BOSTON, MASSACHUSETTS.

LEATHR-SKIVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 650,349, `dated May 22,1900. Application filed December 5,1899. Serial No. 739,291. (No model.)

T0 all whom, it may concern:

Be it known that I, CHARLES I-I. BAYLEY, of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Leather-Skiving Machines, of which the following is adescription sufficiently full, clear, and exact to enable those skilledin the art to which it appertains or with which it is most nearlyconnected to make and use the same.

This invention relates to leather-skiving machines of the type shown inPatent No.` 636,942, granted to me November 14, 1899; and the primeobject in the present instance is to provide for longitudinallyadjusting the feed-roll in bringing about the proper relation betweenthe knife andthe eflicient surface of the feed-roll.

To this end the invention consists in certain novel features ofconstruction and combinations of parts, the essential elements of whichare recited in the appended claims and a preferred form of embodiment ofwhich is specifically described hereinafter and illustrated in theaccompanying drawings.

Of the drawings, Figure l represents a portion of a leather-skivingmachine, for the most part in front elevation, with the presentinvention embodied therein. Fig. 2 is a vertical cross-section on line 22 of Fig. l.

In the drawings the reference-letter a designates a horizontal arm ofthe supportingframework of the machine, on which is mounted the bearingb for the shaft c, carrying the feed-roll c below the knife d andvfeed-disk e.

It is essential to the performance of perfect work that the center oranis of rotation of the knife should be substantially on the median lineof the scarf, and as'scarfs vary in width on various kinds of work andthis' varying width is usually attained through the medium of the guidesand guide-fingers it is necessary, among other things, to regulate theparts so as to bring the center of the knife to proper position, as hashereinbefore been indicated. This has heretofore been commonly done byadjusting the knife or knifecarrier. There are reasons, however, undersome circumstances when it is desirable to leave the position of theknife undisturbed and to adjust the feed-roll to suit it to the positionofthe knife-as, for example, when the latter is driven by gears whichwould require readj ustment--and this is the particular purpose of thepresent invention.

In carrying out my presentimprovements I adjust the feed-roll and guidescordinat'ely longitudinally of the rollshaft. For this purpose and inthe employment of the means shown in the drawings the feed -roll c issplined toits shaft by means of a groove c in the latter and a key 0nthe roll, and the hub 'of the roll is elongated in reduced diameter, asshown at c2, for the accommodation of ashifting ring f,which looselyembraces it and is confined by a collar f', secured to the hub. The ringf is formed on the end of an arm f2, springing from a bracket or blockf3, which is mounted upon a lateral and downward extension b of thebearing l), the bracket having a longitudinal slot f4, engaged by ascrew g, tapped into the shaft-bearing 'extension b. It will be seenthat the longitudinal position of the roll with relation to the knifecan be regulated by adjusting the bracket or block f3. The latter has anupwardly-extending portion f5 for supporting the guide-holding bracketh, which is vertically slotted, as at g', to accommodate a screw,'tapped into said extension of the block f3. The usual guide j andspring j are mounted on the said bracket h, and it will be seen that therelation of these parts to the roll is not changed by longitudinaladjustment of the latter. The adjustment of the guide j determins whatportion of the milled surface of the feed-roll will act on the leather,and as it is important, as stated, that the center of the knife besubstantially in a median line of the acting or efficient portion of thefeed-roll, whatever that .may be, the adjustment of the feed-roll andguides in the manner described effectuates the requirement in a veryconvenient and efficient manner.

Believing that I am the first to adjust the feed-roll laterally withrespect to the knife to accomplish the purpose specified and havingemployed various forms of means for attaining these ends, I do notconfine my invention to the precise form and arrangement of de- IOOvices herein shown, since these may be m'e-'j lateral relation of thefeeding-surface of said chanically varied Without departing from thenature or spirit of the improvements.

Having thus explained the naturer of the invention and described a Wayof constructing and lusing the same, though Without attempting to setforth all of the forms in Which it may be made or all of the modes ofits use, it is declared that what is claimed is--- l. In a machine ofthe character described, the combination with the knife, of a feed-rollcapable of bodily longitudinal adjustmentn transversely of theknife-axis; and adjusting means determining the lateral relation of thefeeding-surface of said roll to the knife, substantially as and for thepurpose described.

l 2.V Ina machine of the character described, the combination With theknife; of a feed-roll and its shaft having provisions for longitudinalmovement of the roll; and an adjusting block or bracket engaging theroll and determiningthe lateral relation of the feeding-surface ofsaidfroll to the knife, substantially as and for the purpose described.

3. In a machine of the character described, the combination with theknife; of a feed-roll and shaft splined together ;A and an adjustingblock or bracket mounted on the shaft-support, engaging the roll anddetermining the roll to the knife, substantially as and for the purposedescribed.

4. In a machine ofthe cb aracter described, the combination with theknife, of a shaft and A support or bearing therefor, a feed-roll splinedon said shaft and having an elongated hub, a longitudinallyadjustablebracket mounted on the shaft-support and having a ring embracing the hubof the roll, and a collar screwed to the latter and con ning .the ring,substantially as described.

5. In a machine of the character described, the combination with theknife, of a shaft and support or bearing therefor, a feed-roll splined'on said shaft, a longitudinally#adjustable bracket mounted on Atheshaft-support and engaging the roll, and a guide-bracket adjustablymounted on said roll-controlling bracket, substantially as described.

In testimony whereof l have signed my name to this specification, in thepresence of two subscribing witnesses, this 24th day of November, A. D.1899. i

CHARLES Il. HAYLEY.

